Electric-light attachment for gas-lamps.



A J. o; STEARNS. ELECTRIC LIGHT ATTACHMENT FOB'GAS LAMS. v

LPPLIOATIOE FILED JAN. 31, 1910.

Patented Nov; 8, 1910.

@Wav/m4 @0m/Wi l tgz v J. C. STEARNS.

ELECTRIC LIGHT ATTACHMENT TOR GAS LAMPS.

APPLICATION FILED JAN. 31, 1910.

974,930. Patented Nov. s, 1910- 2 SHEETS-sinn 2.

capable of general use.

JASON C. STEARNS, OF WORCESTER, MASSACHUSETTS.

ELECTRIC-LIGHT ATTACHMENT FOR vGAS-LANDES.

l Specification of Letters Patent.

Patented Nov. s, 1910.

application med :ennuyer-1910. seriali No. 541,059.

To all whom 'it may concern: v

13e 1t known that I, JAsoN C. S'rEARNs, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented anewl and useful PElectric-Light ,Attachment for Gas-Lamps, of which the following is a- -specificat1on.

This invention relates to a lamp particu-V larly adapted for use on automoblles and other y vehicles, although .the inventionfis On account of the desirability of changing the lhead-lights of automobiles from one form of lamp to another, particularly from lan acetylene to an incandescent electric lamp, it has been proposed heretofore to provide an acetylene burner witha movable incandescentelectric lam adapted-to bel moved into and out of position in front' of the refiector with which the -acetylene lamp is ordinarily provided. This arrangement is. open to objection however, .on account vof the fact that acetylene and other gaslamps cannot be provided with refiectors extending overhead, such as parabolicreflectors, because they would smoke up the upper side thereof. 'l all employed for gas lamps are not as suitab e .for small incandescent lamps as arabolic reflectors would be', because they o not concentrate the rays sufficiently. This makes it necessary to use a high power incandescent lamp to get suflicient livht for the desired purpose. On account of? the irre lar vibration to which these lamps are su jected when used on automobiles a movable electric lamp is objectionable as it is liable to be shaken out of place, particularly after the parts are considerably worn.

The principal objects of this invention are to provide means whereby without materially modifyin the acetylene or other gas lamp ordinariy used, an incandescent electric lamp of comparatively small candle power can be used, and a reflector provided for it of such construct-ion as-to provide for efficiently concentrating the rays and throwing them directly forward; also to provide means whereby" the incandescent lamp will be removably supported on the standard of the gas burner in fixed position so that the vibration of the vehicle will not jar it out of sition; and to provide means whereby the incandescent lamp can be adjusted along the he reflectors usu.

axis of the refiector in'which it is mounted so that the greatest'eiiiciency of the reflector and lamp can be obtained.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings, in Which-v Figure 1 is-a side view of an acetylene as lamp of ordinary construction provied with an electric lamp in .accordance with this invention; Fig. 2 is a central longitudinal sectional view of a portion of the casing of the lamp showing the interior arts chiefly inA elevation; Fig. 3 is a rear e evation of a portion of the electric lamp attachment; Fig. 4 isa planv of a portion thereof showing 'the lamp socket removed `from the reflectorg and Fig'. 5 is a sectional view on the. line 5`-5-of Fig. 3.

Theinvention is shown as applied to an acetylene gas lamp comprising a casing 10 of ordinary construction provided withv a refiector 11 at the back as is well understood in this art. Located entirely front of this reflector" is the b`urner standard -12 on which vis the acetylene gas tip 13. This burner is located as usual substantially at-the focus efficiency of the reflector. As has been stated, a reflector of a'comparatively shallow construction is used and is located suiiiciently far back from the burner to avoid smoking the upper part of the same.

lThe standard is shown as providedwith a. roughened or corrugated portion 15 on standard, and a screw 18 for rigidly fixing it thereto. The bracket extends forward and upward and isprovided with a rigid parabolic reflector 20. This reflector 1s located above the acetylene burner and preferably extends forward substantially to the front of the lamp casing. At the rear of the reis mounted an incandescent electric lamp socket 22. This tubular projection is provided witli a longitudinal slotl 23 and the socket has a fastening screw 2-1 and a Washer 25, the `lower surface of which fits the tubular projection. Into this socket pass of the socket is provided in a well known of the reflector so as to secure the highestwhich is fixed a bracket 16, this bracket havingclaws 17 extending around back of the fi'ector is a tubular projection 21 in which the electrical connections 2G. The inner end` manner with screw 'threads for receiving' Iene flame.

forth alo the incandescent lamp 27. It will 'be observed that in this waya reflector can. be'

used for the electric lamp that is of the p roper shape and 'size to secure amuch hrglher eliciency than would be the case if 1t ad to depend on the comparatively flat reflector 11 which is suitable for the acety- No reflector could be used for the latter of such formas to project over the top of the llame, and inclose` it in such small space as that in which the parabolic reilectorincloses the incandescent lamp. It 1s to .be observed also thatthe rellectorfand incandescent lamp are rigidly supported on the standard so that the vibration, to which lamps of this kind are subjected when apphe to automobiles and the like, will have no effect to. dislodge the lamp or reflector from -their proper position. In addition to these advantageseit isto be observed that the electricl lamp can be moved back and the axis of the parabolic reflector so that 1t lcan be adjusted to proper position therein to eiiiciency. .A

While I have illustrated and described a preferred embodiment of the invention, I am aware that many modifications can be made therein by any person skilled in the art, and `.that the electricy lightattachment can be applied to other than acetylene gas lamps wit out departing from the scope of the invention as expressed in the claims. Therefore I do not wish to be limited to all the details of construction herein shown and described, but

1. As an article of manufacture an acetylene gas burner, having a lreflector behind the burner, a parabolic reflector located abovesaid burner, and an incandescent electric lamp located Within the parabolic re- Hector.

2. As an article of manufacture a gas burner comprising a standard, a reflector behind said burner, a parabolic reflector removably mounted on said standard in front of therst named reflector and over the burner, and an incandescent electric lamp located Within the parabolic reflector.

- 3. As an article of manufacture a burner comprising a standard, a reflector behind the burner, a parabolic reflector located above said burner, an incandescent electric lamp located within the arabolic reflector, a

bracket'on which sai parabolic reflector is give the maximum lighting fixed, and means for removably` attaching l bracket, and a reflector fxedly mounted on said bracket.

6. In a device of the class described, the combination'of a burner, a bracket rigidly fixed thereto and extending upwardly therefrom, an incandescent `electr1c lamp mounted on said bracket, and a reflector for said incandescent lamp removable from the burner with the bracket.

7. In a-device of theclass described, the combination of a'burner having a standard 'provided with a corrugated surface, a bracket-having-claws adapted to engage said corrugated surface, a screw for fixing the bracket to the ystandard on saidfsurface, said bracket extending upwardly, an incandescent electric lam J supported by said bracket above the top o the burner, electrical connections for lthe lamp extending from the rear of the bracket down past the burner, and a reflector for the incandescent lamp mounted on the bracket.

8. The combination Wit-h a burner, of a reflectormounted thereon, and an incandescent electric lamp adjustably supported in the reflector.

9. The combination With a burner, of a parabolic reflector .rigidly mounted thereon., and an incandescent electric lamp adjust-I ably supported by said reflector.

10. The combination with a burner, of a parabolic reflector rigidly mount-ed thereon,

- and an incandescent electric lamp supported in said reflector, and adjustable along the' axis of said reflector.

Intestimony whereof I have hereunto set my hand, in the presence of tWo subscribing Witnesses.

JASON C. STEARNS. lVitnesses:

ALBERT E. FAY, C. F oRREs'r VVEssoN. 

